21214036423522 has 8 divisors (see below), whose sum is σ = 31821083508816. Its totient is φ = 10607008587252.

The previous prime is 21214036423519. The next prime is 21214036423549. The reversal of 21214036423522 is 22532463041212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1638388 + ... + 6716575.

It is an arithmetic number, because the mean of its divisors is an integer number (3977635438602).

Almost surely, 2^{21214036423522} is an apocalyptic number.

21214036423522 is a deficient number, since it is larger than the sum of its proper divisors (10607047085294).

21214036423522 is a wasteful number, since it uses less digits than its factorization.

21214036423522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9624512.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 21214036423522 its reverse (22532463041212), we get a palindrome (43746499464734).

The spelling of 21214036423522 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, four hundred twenty-three thousand, five hundred twenty-two".